On 6/21/21 10:55 AM, Paul Koning via cctalk wrote: > memory. Nobody explained why that was a real problem. > > Core memory is fairly sensitive to temperature. In the case of the 1620, > there is a heating system that brings the core memory box up to its operating > temperature, which is why it takes several minutes after you turn on power > before the machine will run. > > Possibly the fan problem meant the temperature control system was no longer > adequate.
For some (jprobably hallucinatory) reason, I thought there was a project at CHM to replace the 1620 core stack with semiconductor memory. Guess that never happened. --Chuck
